Double-loose-joint ball valve

Abstract

The utility model provides a double-loose-joint ball valve, and belongs to the technical field of ball valves. The problem that an existing ball valve is inconvenient to maintain is solved. The double-loose-joint ball valve comprises a valve body with a water outlet and a water inlet, a valve rod, a handle and a valve element, a non-return assembly is arranged at the water outlet and composed of a mounting pipe, a reset spring and a non-return stop block, a bottom plate is arranged in the mounting pipe, a plurality of water outlet holes are formed in the bottom plate, mounting holes are formed in the bottom plate, and the valve element is arranged in the mounting hole. A supporting rod is arranged between the non-return check block and the bottom plate, a moving space is formed in the non-return check block, a limiting part is arranged on the supporting rod, and a filter screen and an iron core are sequentially arranged on the portion, between the limiting part and the bottom plate, of the supporting rod. The utility model has the advantage of convenient maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves and relates to a ball valve, in particular to a double-joint ball valve. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, and regulating valves. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems. The valves include double-joint ball valves, but the existing double-joint ball valves have a filtering function. However, after long-term use, impurities accumulate on the filter screen, which makes the filtering effect worse, and it is inconvenient to replace and clean the filter screen later, resulting in a short service life and inconvenience for people to use. Summary of the Invention

[0003] The purpose of the utility model is to provide a double flexible joint ball valve in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a double-jointed ball valve, comprising a valve body with a water outlet and a water inlet, a valve stem, a handle and a valve core, characterized in that a check assembly is provided at the water outlet, the check assembly is composed of a mounting tube, a reset spring and a check block, a bottom plate is provided in the mounting tube, a plurality of water outlet holes are provided on the bottom plate, a mounting hole is provided on the bottom plate, a support rod is provided between the check block and the bottom plate, a movable space is provided inside the check block, a limiting portion is provided on the support rod, and a filter screen and an iron core are provided on the support rod and in sequence relative to the limiting portion and the bottom plate.

[0005] In the above-mentioned double-joint ball valve, an inclined portion is provided on the check block, a guide portion is provided at the water outlet and in contact with the inclined portion, and a sealing ring is provided on the guide portion.

[0006] In the above-mentioned double-joint ball valve, a mounting portion is provided on the right side of the mounting tube, a mounting groove is provided on the mounting portion, a limiting retaining spring is provided on the mounting groove, and a right-joint nut is provided on the mounting portion.

[0007] In the above-mentioned double-joint ball valve, a plastic joint is provided at the water inlet, and the plastic joint is fixed at the water inlet by a left joint nut.

[0008] In the above-mentioned double-joint ball valve, the rear end of the support rod is arranged in the mounting hole, the front end of the support rod is arranged inside the movable space, the movable hole is opened on the check block and is connected with the movable space, and a sealing ring 2 is arranged on the check block and on the inner wall relative to the movable hole.

[0009] Compared with the prior art, the utility model can effectively prevent the fluid from flowing back through the check assembly. The reset spring and the front end of the support column are arranged inside the movable space and a sealing ring is arranged at the movable hole to prevent water from flowing into the interior, thereby reducing the damage of the check assembly to impurities in the fluid. By arranging a filter screen and an iron core on the support rod, the iron impurities contained in the pipeline can be reduced, thereby improving the service life. When cleaning later, the filter screen and the iron core can be cleaned by rotating the support rod out of the mounting hole, making cleaning convenient. In addition, the union nuts are arranged on both sides of the valve to make the connection between the valve and the pipeline more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic cross-sectional structural diagram of the present utility model.

[0011] In the figure, 1. water outlet; 2. water inlet; 3. valve body; 4. valve stem; 5. handle; 6. valve core; 7. check assembly; 8. mounting tube; 9. reset spring; 10. check block; 11. bottom plate; 12. water outlet; 13. mounting hole; 14. support rod; 15. movable space; 16. limiting part; 17. filter screen; 18. iron core; 19. inclined part; 20. guide part; 21. sealing ring 1; 22. mounting part; 23. mounting groove; 24. limiting retaining spring; 25. right union nut; 26. plastic joint; 27. left union nut; 28. movable hole; 29. ​​sealing ring 2. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 As shown, the double-joint ball valve includes a valve body 3 with a water outlet 1 and a water inlet 2, a valve stem 4, a handle 5 and a valve core 6. A check assembly 7 is provided at the water outlet 1. The check assembly 7 is composed of a mounting tube 8, a reset spring 9 and a check block 10. A bottom plate 11 is provided in the mounting tube 8. A plurality of water outlet holes 12 are provided on the bottom plate 11. A mounting hole 13 is provided on the bottom plate 11. A support rod 14 is provided between the check block 10 and the bottom plate 11. A movable space 15 is provided inside the check block 10. A limiting portion 16 is provided on the support rod 14. A filter screen 17 and an iron core 18 are provided on the support rod 14 and between the limiting portion 16 and the bottom plate 11 in sequence.

[0014] To be more specific, the check block 10 is provided with an inclined portion 19 , a guide portion 20 is provided at the water outlet 1 and in contact with the inclined portion 19 , and a sealing ring 21 is provided on the guide portion 20 .

[0015] To be more specific, a mounting portion 22 is provided on the right side of the mounting tube 8 , a mounting groove 23 is provided on the mounting portion 22 , a limiting retaining spring 24 is provided on the mounting groove 23 , and a right movable nut 25 is provided on the mounting portion 22 .

[0016] To be more specific, a plastic joint 26 is provided at the water inlet 2 , and the plastic joint 26 is fixed at the water inlet 2 by a left union nut 27 .

[0017] To be more specific, the rear end of the support rod 14 is arranged in the mounting hole 13, the front end of the support rod 14 is arranged inside the movable space 15, a movable hole 28 is opened on the check block 10, and is connected to the movable space 15, and a sealing ring 29 is provided on the check block 10 and on the inner wall relative to the movable hole 28.

[0018] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0019] Although this document frequently uses terms such as water outlet 1, water inlet 2, valve body 3, valve stem 4, handle 5, valve core 6; 7, check assembly 7, mounting tube 8, return spring 9, check block 10, bottom plate 11, water outlet 12, mounting hole 13, support rod 14, movable space 15, limiting portion 16, filter screen 17, iron core 18, inclined portion 19, guide portion 20, sealing ring 1 21, mounting portion 22, mounting groove 23, limiting retaining spring 24, right union nut 25, plastic joint 26, left union nut 27, movable hole 28, and sealing ring 29, the possibility of using other terms is not excluded. The use of these terms is merely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A double joint ball valve, comprising a valve body (3) with a water outlet (1) and a water inlet (2), a valve stem (4), a handle (5) and a valve core (6), characterized in that: A check assembly (7) is provided at the water outlet (1), and the check assembly (7) is composed of a mounting tube (8), a return spring (9) and a check block (10). A bottom plate (11) is provided in the mounting tube (8), a plurality of water outlet holes (12) are provided on the bottom plate (11), a mounting hole (13) is provided on the bottom plate (11), a support rod (14) is provided between the check block (10) and the bottom plate (11), a movable space (15) is provided inside the check block (10), a limiting portion (16) is provided on the support rod (14), and a filter screen (17) and an iron core (18) are provided on the support rod (14) and between the limiting portion (16) and the bottom plate (11) in sequence.

2. A double joint ball valve according to claim 1, characterized in that: The check block (10) is provided with an inclined portion (19), a guide portion (20) is provided at the water outlet (1) and in contact with the inclined portion (19), and a sealing ring (21) is provided on the guide portion (20).

3. A double joint ball valve according to claim 1, characterized in that: A mounting portion (22) is provided on the right side of the mounting tube (8), a mounting groove (23) is provided on the mounting portion (22), a limiting retaining spring (24) is provided on the mounting groove (23), and a right movable nut (25) is provided on the mounting portion (22).

4. A double joint ball valve according to claim 1, characterized in that: A plastic joint (26) is provided at the water inlet (2), and the plastic joint (26) is fixed to the water inlet (2) by a left flexible nut (27).

5. A double joint ball valve according to claim 1, characterized in that: The rear end of the support rod (14) is arranged in the mounting hole (13), and the front end of the support rod (14) is arranged in the movable space (15). The non-return block (10) is provided with a movable hole (28) and is connected to the movable space (15). A sealing ring 2 (29) is provided on the non-return block (10) and on the inner wall relative to the movable hole (28).

Images